Material preparation process suitable for preparing dissolving pulp by modifying natural color unblenched needlebush and broadleaf wood composite paper pulp
A technology of composite pulp and hardwood, applied in the field of viscose chemical fiber raw material-pulp preparation, can solve the problems of high cost, semi-finished and final finished dissolving pulp, etc., and achieve the effect of low cost, easy control of ash content and uniform quality
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Embodiment 1
[0058] A raw material preparation process for preparing dissolving pulp by modifying unbleached unbleached softwood and hardwood composite pulp, comprising the following process steps:
[0059] A. Raw material preparation
[0060] According to the ratio of the total weight of natural unbleached softwood pulp and natural unbleached hardwood pulp to the volume of the digester: 100kg: 1m 3 Raw materials are prepared by selecting natural unbleached softwood pulp and natural unbleached hardwood pulp;
[0061] B. Dispersion and pulping
[0062] The unbleached unbleached softwood pulp and the unbleached hardwood pulp are dispersed and processed into pulp boards, and then the unbleached unbleached softwood pulp board and the unbleached hardwood pulp board are mixed with water for pulping to obtain unbleached unbleached wood pulp. The mixture of coniferous wood pulp, natural unbleached hardwood pulp and water is the pulp porridge, and then undergo the next step of pressing and dehydr...
Embodiment 2
[0069] A raw material preparation process for preparing dissolving pulp by modifying unbleached unbleached softwood and hardwood composite pulp, comprising the following process steps:
[0070] A. Raw material preparation
[0071] According to the ratio of the total weight of natural unbleached softwood pulp and natural unbleached hardwood pulp to the volume of the digester: 250kg: 1m 3 Raw materials are prepared by selecting natural unbleached softwood pulp and natural unbleached hardwood pulp;
[0072] B. Dispersion and pulping
[0073] The unbleached unbleached softwood pulp and the unbleached hardwood pulp are dispersed and processed into pulp boards, and then the unbleached unbleached softwood pulp board and the unbleached hardwood pulp board are mixed with water for pulping to obtain unbleached unbleached wood pulp. The mixture of coniferous wood pulp, natural unbleached hardwood pulp and water is the pulp porridge, and then undergo the next step of pressing and dehydr...
Embodiment 3
[0080] A raw material preparation process for preparing dissolving pulp by modifying unbleached unbleached softwood and hardwood composite pulp, comprising the following process steps:
[0081] A. Raw material preparation
[0082] According to the ratio of the total weight of natural unbleached softwood pulp and natural unbleached hardwood pulp to the volume of the digester: 175kg: 1m 3 Raw materials are prepared by selecting natural unbleached softwood pulp and natural unbleached hardwood pulp;
[0083] B. Dispersion and pulping
[0084] The unbleached unbleached softwood pulp and the unbleached hardwood pulp are dispersed and processed into pulp boards, and then the unbleached unbleached softwood pulp board and the unbleached hardwood pulp board are mixed with water for pulping to obtain unbleached unbleached wood pulp. The mixture of coniferous wood pulp, natural unbleached hardwood pulp and water is the pulp porridge, and then undergo the next step of pressing and dehydr...
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